From: zhong jiang <zhongjiang@xxxxxxxxxx>
z3fold compact page has nothing with the last_chunks. even if
last_chunks is not free, compact page will proceed.
The patch just remove the limit without functional change.
Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx>
---
mm/z3fold.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/mm/z3fold.c b/mm/z3fold.c
index e8fc216..4668e1c 100644
--- a/mm/z3fold.c
+++ b/mm/z3fold.c
@@ -258,8 +258,7 @@ static int z3fold_compact_page(struct z3fold_header *zhdr)
if (!test_bit(MIDDLE_CHUNK_MAPPED, &page->private) &&
- zhdr->middle_chunks != 0 &&
- zhdr->first_chunks == 0 && zhdr->last_chunks == 0) {
+ zhdr->middle_chunks != 0 && zhdr->first_chunks == 0) {
memmove(beg + ZHDR_SIZE_ALIGNED,
beg + (zhdr->start_middle << CHUNK_SHIFT),
zhdr->middle_chunks << CHUNK_SHIFT);
--
1.8.3.1
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